Environmentally Isolated Waveguide Display

a waveguide display and environment isolation technology, applied in the field of display devices, can solve problems such as disturbance of beam propagation
US20200064637A1Active Publication Date: 2020-02-27DIGILENS
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
DIGILENS
Publication Date
2020-02-27

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Abstract

A waveguide display is provided comprising: an input image generator providing image light projected over a field of view; a waveguide having first and second external surfaces; and at least one grating optically coupled to the waveguide for extracting light towards a viewer. The waveguide has a lateral refractive index variation between said external surfaces that prevents any ray propagated within the waveguide from optically interacting with at least one of the external surfaces.
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Description

PRIORITY CLAIMS

[0001] This application is a continuation of U.S. patent application Ser. No. 15 / 543,016, entitled “Environmentally Isolated Waveguide Display” to Popovich et al, filed Jul. 12, 2017, which is the U.S. National Phase of PCT Application No. PCT / GB2016 / 000005, entitled “Environmentally Isolated Waveguide Display” to Popovich et al, filed Jan. 12, 2016, which claims the benefit of U.S. Provisional Application No. 62 / 125,066, entitled “OPTICAL WAVEGUIDE DISPLAYS FOR INTEGRATION IN WINDOWS” to Waldern et al, filed Jan. 12, 2015, the disclosures of which are incorporated herein by reference in their entireties.BACKGROUND OF THE INVENTION

[0002] This invention relates to a display device, and more particularly to a holographic optical waveguide display.

[0003] Optical waveguide devices are being developed for a range of display applications such as Head Mounted Displays (HMDs) and Heads Up Displays (HUDs). Another field of application of waveguides is in sensors such as eye track...

Claims

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